Product Description:

The MAC71C-0-JS-4C/095-A-2/MR119/S001 is an AC servo motor manufactured by Bosch Rexroth Indramat for the MAC AC Servo Motors series. Classified as a motor for analog drives, it translates precisely metered phase currents into controlled shaft rotation for pick-and-place modules, feeders, and other motion-centered automation stations. The motor is intended for axes that require accurate speed control, repeatable positioning, and reliable stopping under varying load conditions. Its compact layout supports installations where mounting space is limited and stable alignment at the machine interface is important.

When operated at its nominal speed of 4000 min⁻¹, the motor sustains a continuous torque of 6.6 Nm while the drive supplies a continuous standstill current of 15.3 A. Cooling is done by natural convection, so unobstructed airflow around the housing is required to carry heat away from the frame. The stator’s electrical characteristics include a winding inductance of 3.5 mH and a winding resistance of 0.35 Ω. These values affect current rise time and resistive heating during operation. The centering flange helps align the housing to gearboxes or brackets, which supports consistent shaft positioning at the machine connection and helps maintain stable operation during repeated start-stop cycles.

For short acceleration bursts, the controller may apply up to 77 A of pulse current, and the electromagnetic design converts each ampere into torque at a rate of 0.430 Nm/A. The thermal mass of the windings and frame yields a heating time constant of 45 min, which allows brief overload periods without immediate overheating. Dynamic response is also influenced by a rotor inertia of 12.9 × 10⁻⁴ kg·m², balancing rapid speed changes with smooth running. The integrated brake holds 6.5 Nm when supplied with 24 V DC at 0.7 A, closes 20 ms after command, and opens in 60 ms, giving predictable stop-and-release behavior on vertical axes and other applications that need controlled holding action.